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Message-Id: <20200514185550.21462-1-sashal@kernel.org>
Date: Thu, 14 May 2020 14:55:24 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Sergei Trofimovich <slyfox@...too.org>,
Jiri Kosina <jkosina@...e.cz>,
Masahiro Yamada <masahiroy@...nel.org>,
Sasha Levin <sashal@...nel.org>, linux-kbuild@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 01/27] Makefile: disallow data races on gcc-10 as well
From: Sergei Trofimovich <slyfox@...too.org>
[ Upstream commit b1112139a103b4b1101d0d2d72931f2d33d8c978 ]
gcc-10 will rename --param=allow-store-data-races=0
to -fno-allow-store-data-races.
The flag change happened at https://gcc.gnu.org/PR92046.
Signed-off-by: Sergei Trofimovich <slyfox@...too.org>
Acked-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/Makefile b/Makefile
index 2a923301987e5..4ff8ea7d2835e 100644
--- a/Makefile
+++ b/Makefile
@@ -672,6 +672,7 @@ KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \
# Tell gcc to never replace conditional load with a non-conditional one
KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
+KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races)
# check for 'asm goto'
ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
--
2.20.1
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